TL;DR: The annual fertilizer restriction period is now in effect across Lee County and many incorporated cities in Collier County, running from June 1 through September 30. The purpose of the ban is to reduce nutrient runoff during Southwest Florida’s rainy season and help protect local waterways from harmful algae blooms, including Red Tide. While traditional fertilizer applications are restricted, there are still many effective ways to maintain healthy lawns and landscapes throughout the summer through proper mowing, irrigation, mulching, composting, pruning, and weed management.
Summer in Southwest Florida Brings More Than Rain
Every year around this time, the same question starts popping up at the nursery.
“Can I still fertilize my lawn?”
For many homeowners and landscape professionals, June 1 marks the beginning of one of Southwest Florida’s most important environmental regulations. The annual fertilizer restriction period is now in effect and will remain in place through September 30 throughout Lee County and many incorporated municipalities in Collier County.
While some view the restriction as an inconvenience, the reality is that it serves an important purpose. Summer is when our region receives the majority of its annual rainfall. Afternoon thunderstorms become a daily occurrence, drainage systems fill quickly, and water moves rapidly through neighborhoods, canals, retention ponds, rivers, and estuaries. When fertilizers are applied during these conditions, nutrients that are not immediately absorbed by plants often get carried away by stormwater runoff.
Those nutrients do not simply disappear. They eventually find their way into local waterways where they can contribute to excessive algae growth and declining water quality.
Why the Fertilizer Ban Exists
Southwest Florida’s waterways are one of our greatest resources. They support fishing, boating, wildlife, tourism, and the quality of life that attracts so many people to the region.
Unfortunately, they are also vulnerable.
Nitrogen and phosphorus are essential nutrients for healthy lawns and landscapes, but they become problematic when they enter waterways in excessive amounts. During the rainy season, fertilizers applied to lawns can be washed into storm drains and nearby bodies of water before plants have an opportunity to use them.
These nutrients can contribute to harmful algae blooms and other water quality issues. While Red Tide is a naturally occurring organism, excess nutrients entering the environment can worsen algae-related problems and create conditions that negatively impact aquatic ecosystems.
Most Southwest Florida residents have experienced the effects firsthand. Fish kills, foul odors, respiratory irritation, and beach closures affect residents, visitors, and businesses alike. The fertilizer restriction period is one of several measures designed to reduce nutrient pollution during the months when runoff is most likely to occur.
Simply put, the goal is to keep nutrients where they belong: in the landscape rather than in our waterways.
What Products Are Restricted?
During the restriction period, fertilizers containing nitrogen and phosphorus generally cannot be applied to turf and landscape areas within covered jurisdictions.
There are limited exceptions depending on the municipality and specific product classifications, which is why homeowners and contractors should always verify local requirements before applying any fertilizer during the summer months.
If you are unsure whether a product is permitted, it is worth taking a few minutes to ask before applying it.
There Are Consequences for Violations
Many homeowners are surprised to learn that fertilizer restrictions are enforceable ordinances.
Violations can result in warnings, citations, and monetary penalties depending on the jurisdiction and circumstances. In Lee County, code enforcement penalties can escalate for repeat violations, making compliance particularly important for both homeowners and landscape professionals.
Contractors should be especially mindful because violations can affect not only their business but also their clients. A quick fertilizer application intended to help a struggling lawn can quickly become an unnecessary headache if it violates local regulations.
The easiest solution is simple. Follow the restrictions and focus on alternative methods of maintaining landscape health during the summer months.
Your Landscape Can Still Thrive Without Fertilizer
One of the biggest misconceptions about the fertilizer ban is that lawns and landscapes are left on their own until October.
That is simply not true.
In fact, many of the most important landscape maintenance practices have nothing to do with fertilizer. Summer is an excellent time to focus on improving soil health, strengthening root systems, managing irrigation, and reducing stress on plants.
A healthy landscape is built through multiple factors working together, not through fertilizer alone.
Refresh Mulch Throughout Landscape Beds
Mulch may be one of the most valuable tools available during the summer months.
A fresh layer of mulch helps regulate soil temperatures, suppress weeds, reduce moisture loss, and minimize erosion during heavy rainfall events. Organic mulches gradually break down over time, adding beneficial organic matter back into the soil while improving overall growing conditions.
Beyond the practical benefits, mulch also gives landscape beds a clean, finished appearance that can instantly improve curb appeal.
Add Compost to Build Better Soil
If fertilizer feeds plants, compost feeds the soil.
Adding compost to landscape beds improves soil structure, encourages beneficial microbial activity, increases moisture retention, and provides a slow release source of nutrients. It is one of the most effective long-term investments homeowners can make in the health of their landscapes.
Healthy soil creates healthier plants, and healthier plants are naturally more resistant to drought, disease, and environmental stress.
Focus on Proper Mowing Practices
Many homeowners unknowingly create lawn problems through improper mowing.
Grass should never be cut too short during the summer. Taller grass blades help shade the soil, reduce moisture loss, and encourage deeper root growth. This results in a stronger lawn that is better equipped to handle heat and heavy rainfall.
It is also beneficial to leave grass clippings on the lawn after mowing. As they decompose, they naturally return nutrients to the soil and reduce the need for supplemental inputs.
Evaluate Your Irrigation System
Summer is the perfect time to inspect irrigation systems for efficiency.
Broken heads, clogged nozzles, leaks, and poor coverage patterns often go unnoticed until plants begin showing signs of stress. A properly functioning irrigation system ensures plants receive the water they need without wasting resources or contributing to runoff issues.
Many homeowners are surprised to discover that irrigation problems, not fertilizer deficiencies, are responsible for many landscape issues they see during the summer months.
Stay Ahead of Weeds
Warm temperatures and abundant rainfall create ideal conditions for weed growth.
Rather than allowing weeds to establish themselves and compete with desirable plants, summer is a good time to maintain mulch coverage, hand-pull problem areas, and stay proactive with landscape maintenance.
A healthy, dense lawn and properly mulched landscape beds naturally discourage weed growth and reduce long-term maintenance requirements.
Prune for Health and Hurricane Preparedness
Summer pruning should be focused on health and safety rather than aggressive reshaping.
Removing damaged branches, weak growth, and dead material improves airflow and reduces opportunities for disease problems. It also helps prepare landscapes for hurricane season by reducing the risk of storm-related damage.
Trees and shrubs that are properly maintained tend to withstand severe weather far better than neglected landscapes.
Consider Florida-Friendly and Native Plants
One of the best ways to reduce fertilizer dependence altogether is by incorporating plants that are naturally adapted to Southwest Florida conditions.
Plants such as Firebush, Coontie, Muhly Grass, Simpson Stopper, and native wildflowers typically require fewer inputs than many exotic species while providing excellent landscape performance. Many of these plants also support pollinators and wildlife, making them beneficial additions to both residential and commercial landscapes.
Choosing the right plant for the right place often eliminates many of the maintenance challenges homeowners face in the first place. For more information on native plants for a low-maintenance garden, read our dedicated blog post here.
Doing Our Part Matters
The annual fertilizer restriction period is not about making lawn care more difficult. It is about protecting the waterways, beaches, estuaries, and ecosystems that make Southwest Florida unique.
Every homeowner, landscaper, contractor, and property manager plays a role. Small decisions made across thousands of properties can collectively have a significant impact on water quality during the rainy season.
By focusing on proper mowing, irrigation management, mulching, composting, pruning, and Florida-Friendly landscaping practices, it is entirely possible to maintain an attractive property while remaining compliant with local regulations.
If you have questions about approved products, summer landscape care, mulch, compost, or Florida-Friendly plant options, stop by Sanjuan Family Nursery. Our team is always happy to help homeowners and contractors keep their landscapes healthy while protecting the natural resources that make Southwest Florida such a special place to call home.
